NRL TERRAIN CLUTTER STUDY: PHASE 2

Abstract

The second and final phase of a terrain clutter study was completed at Naval Research Laboratory utilizing the Four-Frequency Radar System installed in a WV-2 (Super Constellation) aircraft, BuNo 128324. This system is capable of transmitting and receiving four frequencies (P,X,L, and C) consecutively with a choice of horizontal, vertical, and alternating polarizations. The returns are gated at a fixed range and analyzed in a digital computer. Absolute clutter measurements have been taken over several sites at angles of incidence from 5 degrees to 60 degrees. The parameter measured was the normalized radar cross section in terms of the median value of its probability distribution. Data were obtained for this parameter as a function of incident angle, transmitted and received polarization, and radar wavelength for a wide variety of terrain types such as desert, mountainous, urban, and water. A significant conclusion was that the wavelength dependence of the terrain clutter varies from n = 0 for urban terrain to n = 3/2 for marshes.

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Document Details

Document Type
Technical Report
Publication Date
Oct 21, 1968
Accession Number
AD0679568

Entities

People

  • James R. Duncan
  • John C. Daley
  • Michael B. Laing
  • Willie T. Davis

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Aircrafts
  • Angle Of Incidence
  • Cross Polarization
  • Delaware Bay
  • Flight Paths
  • Frequency
  • Ground Clutter
  • Instrumentation
  • Measurement
  • New Jersey
  • P Band
  • Polarization
  • Probability
  • Probability Distributions
  • Radar
  • Repetition Rate
  • Scattering

Readers

  • Radar Systems Engineering.
  • Urban Planning and Geography.